Avr, you are going to have to tell us a lot more. Colt's catalog doesn't list the real 1911 in .22, tho' I'm guessing they are still making the .22 conversion that would be installed on a .45 frame.
If you're talking about the Umarex 3/4 scale replica with a Colt name on it, I'd avoid it.
What do you want to do with this pistol?
Moon